Simon kinney



s. KINNEY.

SAW TOOTH.

PatentedJune 15, 1886.

(No Model.)

NiTiEn Srarns ATENT much.

SIMON KINNEY, OF BROWNSVILLE, CALIFORNIA, ASSIGNOB OF ONE-HALF TO S. H.PRATT, OF SAME PLACE.

SAW-TOOTH.

' SPECIFICATION forming part of Letters Patent No. 343,713, dated June15, 1886.

Application filed October 1, 1885. Serial No. 178,769. (No model.)

To all whom it may concern: enlargement at the bottom of the socket whenBe it known that I, SIMON KINNEY, of the bit is in position.Brownsville, Yuba county, State of Oalifor- Thebit is made narrowestbetween the 55 nia, have invented an Improvement in Sawpoints a a in aline extending across below 5 Bits; and I hereby declarethe following tothe shoulder O, and it is made widest at the be a full, clear, and exactdescription of the point extending across in line from G to the same.front of the bit.-

My invention relates to a bit or cutter to When this bit is introducedin the socket 60 be used in circular saws; and it consists ofa in thesawplate which corresponds to its 1o curved bit having its front andrear grooved shape, it will be manifest that the lower end to fitcorresponding tongues in the socket f the tongue or elastic portion Fwill be of the saw-plate into which it fits, the bit compressed so as tonearly or quite close the having a slot made longitudinally in it fromslot D, and thus allow the bit to slip 65 the base outward, so that oneside forms an the socket. which is narrower at the top than I 5 elastictongue. The base or inner portion of it is at the bottom. The bit maythen be the bit is wider than the outer portion, and pushed in until itreaches the bottom of thewhen introduced into the slot or channel insocket, and the enlargement II will spring the saw-plate the elastictongue allows it to be outward into the corresponding space made 70compressed until it reaches its final position, to receive it, and willthus lock the bit firmly when an enlargement or catch at the lower inplace and prevent it from coming out. end falls into a correspondingplace in the By this construction I am enabled to place socket of thesaw-plate and looks it firmly. more bits in the saw-plate than by anyother Referring to the accompanying drawing means.. The throat for theescape of the saw- 75 for a more complete explanation of my invendust isa natural one, and is the greatest and tion, the figure is a Viewshowing asection of most perfect that can be given.

a saw-plate with my bit. The points of the bits are presented to the Ais the point of the bit or cutter, and from wood at a greater angle thanby any other this point the back B extends nearly or quite style ofconstruction, and thus provide an 80 in line with the curved portion ofthe saweasy-cutting edge.

plate within which the socket is formed to Having thus described myinvention, what receive the bit. From the rear of the back I claim asnew, and desire to secure by Letters portion the bit is formed at rightangles, or Patent, isnearly so, with thisportion, thus providing a Asaw-bit formed with curved or circular 85 shoulder, O, which restsagainst the correlines,with a cutting-point and shoulder at thespondingly-formcd part of the saw-plate at rear end of the back to fit acorresponding this point. portion of the saw-plate, the bit being madeThe front and rear edges of the bit are narrowest at the base of thisshoulder, and formed in circular curves, and the baseis also enlargingfrom this point toward the inner 0 formed in a circular curve, as shown.end, in combination with an elastic tongue This bit has a channel orgroove formed formed by slotting said bit from the base toupon its frontand rear, so as to fit a correward the point, said elastic tonguetapering spending V-shaped tongue, which is formed and decreasing inthickness toward its end, in the socket of the saw-plate, so that whenand provided with a locking projection or 5 the bit is in place it willnotslip to either catch to fit a corresponding socket and openside. ingsin the saw-plate, substantially as herein A slot, D, is madelongitudinally. extenddescribed. ing from an enlargement or hole, E, inthe In witness whereof I have hereunto set my bit down to the base, soas to form an elastic hand.

tongue, F, which is widest at the hole E, and SIMON KINNEY. 5c decreasesin width to the point G near its WVitnesses:

lower end. From this point an enlargement HARMON A. PHEL'IS, is made atH, which fits into a corresponding JOHN SOHRODER.

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